No. A stepparent is no different than a third party. A few years back, the US Supreme Court declared that our Third party visitation statute was unconstitutional. This means that a biological custodial parent has an absolute right to determine whio visits with the child. In order to change that outcome, you would have to file a thrid party custody action alleging that the custodial parent is unfit or that you have a parnent-like psycholgical relationship with he child that outweighs other factors -- both are very, very difficult to do.